Lecithocera bicornuta, Yu & Wang, 2024

Yu, Shuai & Wang, Shuxia, 2024, The genus Lecithocera (Lepidoptera: Lecithoceridae) from China, with descriptions of twenty-one new species, European Journal of Taxonomy 924, pp. 1-74 : 8-9

Lecithocera bicornuta sp. nov.

urn:lsid:zoobank.org:act:F662643C-DC9C-41D8-A596-C86A18765728

Figs 1F , 6D , 10F , 15F

Diagnosis

The new species is superficially similar to L. yoshiyasui Park, 2006 . In the male genitalia it can be distinguished by the cucullus with distinctly narrow rounded apex which is longer than half the length of the valva, and the saccus not developed, with a rounded anterior margin; in L. yoshiyasui , the cucullus is slightly narrowed to broadly rounded apex and it is half the length of valva; the saccus is triangular ( Park 2006a: 101, fig. 6).

Etymology

The specific epithet is derived from the Latin “ bi -” and “ cornuti ”, referring to the aedeagus with two cornuti in the male genitalia.

Type material

Holotype

CHINA – Yunnan Province • ♂; Xishuangbanna, Lvshilin ; 21º51′ N, 101º25′ E; 20 May 2015; Z.G. Zhang leg.; slide no. YS19614 ; NKU.

Paratypes (33 ♂♂)

CHINA – Yunnan Province • 28 ♂♂; same collection data as for holotype except 20 May‒4 Jun. 2015; NKU • 1 ♂; Jinghong City, Yexianggu ; 762 m a.s.l.; 26 Jul. 2014; K.J. Teng et al. leg.; slide no. YS19610 ; NKU • 3 ♂♂; Jinghong City, Yexianggu ; 762 m a.s.l.; 9–13 Jul. 2015; K.J. Teng and X. Bai leg.; NKU • 1 ♂; Jinghong City, Yexianggu ; 762 m a.s.l.; 9 Aug. 2016; K.J. Teng et al. leg.; NKU .

Description

ADULT ( Figs 1F , 6D ). Wingspan 12.0‒13.0 mm. Head orange white. Antenna orange white; flagellum ringed with dark brown. Labial palpus with second palpomere orange white on inner surface, yellowish brown on outer surface, roughly scaled ventroapically; third palpomere orange white dorsally, dark brown ventrally, shorter than second palpomere. Thorax and tegula orange white. Forewing with costal margin nearly straight except extending ventrad from distal 1/5, apex triangularly produced, termen obliquely truncate; ground colour orange white, with scattered dark brown scales; markings blackish brown: basal streak slender, about ¼ as long as costal margin; discal stigma rounded; discocellular stigma larger, elliptical; tornal streak oblique inward, extended to below discocellular stigma anteriorly; fringe pale brownish yellow; R 3, R 4 and R 5 stalked, R 5 to termen, M 2 and M 3 free, CuA 1 and CuA 2 short-stalked. Hindwing and fringe pale greyish brown; fringe with pale yellow basal line; M 3 and CuA 1 coincident.

MALE GENITALIA ( Fig. 10F ). Uncus subtriangular, concave in broad V-shape on posterior margin; caudal lobe short digitiform, setose and rounded apically. Gnathos with basal plate triangularly produced on posterior margin; median process wide at base, narrowed to distal ⅓, then slender to pointed apex, curved ventrad preapically. Valva broad and parallel-sided basally, narrowed to cucullus; cucullus longer than half length of valva, parallel-sided in basal 2/5, thereafter narrowed to narrowly rounded apex, shallowly concave medially on costal margin, setose, with row of bullet-shaped setae along ventral margin in basal 2/5; costal bar narrow in basal half, widened from middle toward valva, gently angled at middle; sacculus distinct and taenioid basally. Vinculum broad; saccus not developed, rounded on anterior margin. Juxta shield-shaped, with small notch at middle on posterior margin, projected at middle on anterior margin; posterior lobe semiovate basally, narrow taenioid distally, extending outward. Aedeagus about ¾ length of valva, wide at base, narrowed to basal ¼ where it is curved, then parallel-sided, without dorsal denticle, with dense granules in vesica; cornuti consisting of long bar about ⅔ length of aedeagus, and recurved sclerite at middle.

SEVENTH ABDOMINAL STERNITE ( Fig. 15F ). Anterolateral rib bar-shaped, curved gently, not reaching posterior margin of sixth abdominal sternite; posterolateral lobe weakly sclerotized, elongate triangular.

Female

Unknown.

Distribution

China (Yunnan).

Figures

Fig. 1. Adults of species of Lecithocera Herrich-Schäffer, 1853 (NKU), dorsal view. A. L. alpestra Park, 2005, male. B. L. alpina Park, 2016, male. C. L. angustifolia sp. nov., holotype, male. D. L. asticta sp. nov., holotype, male. E. L. balteiformis sp. nov., holotype, male. F. L. bicornuta sp. nov., paratype, male. Scale bars=2.0 mm.

Fig. 6. Wing venations of species of Lecithocera Herrich-Schäffer, 1853, all paratypes (NKU). A. L. angustifolia sp. nov., male, slide no. YS19608. B. L. asticta sp. nov., male, slide no. YS20005. C. L. balteiformis sp. nov., male, slide no. YS18197. D. L. bicornuta sp. nov., male, slide no. YS19610. E. L. bigeminata sp. nov., male, slide no. YS20003. F. L. duplicispinea sp. nov., female, slide no. ZMR10313. Scale bars =2.0 mm.

Fig. 10. Male genitalia of species of Lecithocera Herrich-Schäffer, 1853 (NKU). A. L. alpestra Park, 2005, slide no. YS19101. B. L. alpina Park, 2016, slide no. YS19008. C. L. angustifolia sp. nov., holotype, slide no. YS19607. D. L. asticta sp. nov., holotype, slide no. YS19603. E. L. balteiformis sp. nov., holotype, slide no. LSR13346. F. L. bicornuta sp. nov., holotype, slide no. YS19614. Scale bars =0.5 mm.

Fig. 15. Male seventh abdominal sternite of species of Lecithocera Herrich-Schäffer, 1853 (NKU). A. L. alpestra Park, 2005, slide no. YS19101. B. L. alpina Park, 2016, slide no. YS19008. C. L. angustifolia sp. nov., holotype, slide no. YS19607. D. L. asticta sp. nov., holotype, slide no. YS19603. E. L. balteiformis sp. nov., holotype, slide no. LSR13346. F. L. bicornuta sp. nov., holotype, slide no. YS19614. G. L. bigeminata sp. nov., paratype, slide no. LSR13407. H. L. chersitis Meyrick, 1918, slide no.YS19635.I. L. duplicispinea sp. nov., paratype, slide no. ZYM06270. Scale bars =0.5 mm.